EP1572815B1 - Intumescent body - Google Patents

Intumescent body Download PDF

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Publication number
EP1572815B1
EP1572815B1 EP03767815.8A EP03767815A EP1572815B1 EP 1572815 B1 EP1572815 B1 EP 1572815B1 EP 03767815 A EP03767815 A EP 03767815A EP 1572815 B1 EP1572815 B1 EP 1572815B1
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EP
European Patent Office
Prior art keywords
intumescent
polymer material
weight
carbon
coating composition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03767815.8A
Other languages
German (de)
French (fr)
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EP1572815A1 (en
Inventor
Thomas Leucht
Hannes Obernosterer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Raymaster Holding AG
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Raymaster Holding AG
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Publication date
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Publication of EP1572815A1 publication Critical patent/EP1572815A1/en
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/68—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof
    • D06M11/72—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof with metaphosphoric acids or their salts; with polyphosphoric acids or their salts; with perphosphoric acids or their salts
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/18—Fireproof paints including high temperature resistant paints
    • C09D5/185—Intumescent paints
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K21/00—Fireproofing materials
    • C09K21/02—Inorganic materials
    • C09K21/04—Inorganic materials containing phosphorus
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D06N3/0059—Organic ingredients with special effects, e.g. oil- or water-repellent, antimicrobial, flame-resistant, magnetic, bactericidal, odour-influencing agents; perfumes
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/30—Flame or heat resistance, fire retardancy properties
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y10T442/102—Woven scrim
    • Y10T442/172—Coated or impregnated
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y10T442/184—Nonwoven scrim
    • Y10T442/198—Coated or impregnated
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2525—Coating or impregnation functions biologically [e.g., insect repellent, antiseptic, insecticide, bactericide, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2631—Coating or impregnation provides heat or fire protection
    • Y10T442/2648—Coating or impregnation is specified as an intumescent material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2631—Coating or impregnation provides heat or fire protection
    • Y10T442/2672—Phosphorus containing
    • Y10T442/2689—A phosphorus containing compound and a nitrogen containing compound

Definitions

  • the invention relates to an intumescent body according to the preamble of claim 1 and a use according to claim 17.
  • the invention generally relates to the field of flame retardant intumescent materials or compositions.
  • Flame-retardant intumescent compositions are i.a. synthetic resins provided with a blowing agent and a flame retardant, or aqueous synthetic resin dispersions which form a foam made of carbon when exposed to heat.
  • the synthetic resin essentially serves as a carbon source.
  • the carbon foam has a 10 to 100-fold volume compared to the original thickness of the coating composition. Because of its very low thermal conductivity, the foam protects a material coated therewith from exposure to flames.
  • the DE 197 51 434 A1 describes a generic intumescent body.
  • the body is made of a non-intumescent polymeric material, such as plastic, forming the shape of the body, and an intumescent coating applied to the polymeric material.
  • the known coating composition is not suitable for coating printed textiles, in particular, for lack of sufficient transparency.
  • From the DE 38 01 456 A1 is a method for preparing flame-retardant polyurethane compositions known. It is dispensed with an addition of halogen and / or heavy metal compounds which form harmful gases in a fire.
  • the DE 40 41 470 A1 describes an intumescent textile, in which between two interconnected textile proceedingsn- chengesenten a layer of a granular Intumeszenzschs is provided.
  • an intumescent flame-retardant coating composition is known, which is added as a flame retardant, inter alia, ammonium polyphosphate.
  • the coating composition further contains melamine as the blowing agent.
  • the known coating composition is not suitable for coating printed textiles as a result of their lack of transparency.
  • the DE 196 08 612 C2 discloses a flame retardant intumescent coating composition which contains epoxy resin as the resin.
  • the coating composition is solvent-containing; up to 65% by weight of fillers may be added. Also, this coating composition is not suitable for coating textiles.
  • US6248820 discloses a handkerchief preferably of polyester coated with a coating composition containing a) 140 parts (37% by weight) of EVA (50% by weight of solid), b) 100 parts (26% by weight) of polyurethane (30% by weight of solid), c ) 2 parts (0.52% by weight) of isocyanate, d) 40 parts (10% by weight) of ammonium polyphosphate, e) 3 parts (0.78% by weight) of red phosphorus and f) 100 parts (26% by weight) of ammonium hydroxide.
  • intumescent coating compositions In order to ensure sufficient effectiveness, intumescent coating compositions must be applied in sufficient thickness to the body to be protected. This increases the weight of the body. Such an increase in weight is particularly undesirable for bodies for use in the aerospace industry or textiles. Apart from that, the preparation of conventional intumescent coating compositions requires the provision and processing of a variety of different components. This increases undesirably the production cost. Finally, conventional intumescent coating compositions have little or no transparency. This significantly restricts the freedom of surface design of bodies to be coated with intumescent masses.
  • the object of the invention is to eliminate the disadvantages of the prior art.
  • an intumescent system should be specified, which has the lowest possible weight and, furthermore, is simple and inexpensive to produce.
  • a coating composition of the intumescent system should have the highest possible transparency, for example, not to interfere with an intended on a surface of the body imprint.
  • an intumescent body made of a non-intumescent polymer material forming the body which has a difference ⁇ T between a melting temperature Ts and a crystallization temperature Tc of the polymer material in the range of 55 to 70 K, and a transparent one applied to the polymer material
  • a coating composition having the following composition: 25 to 95% by weight of a polyurethane or polyacrylate-containing aqueous dispersion, 0.5 to 10% by weight of an isocyanate or a melamine-formaldehyde and 3 to 15% by weight of ammonium polyphosphate as a flame retardant, wherein the polymer material together with the coating composition gives an intumescent system, in which case the coating composition penetrates into the interior of the polymer material forming a carbon-supplying component in the event of fire and a flame-extinguishing foam development takes place in cooperation with the polymer material, the polymer material provides a proportion of at least 20% by weight of the carbon in the intumescent system
  • the polymer material together with the coating composition results in an intumescent system in which the polymer material forms a carbon-supplying component.
  • the components of the intumescent system are no longer contained exclusively in a substance or a mass with intumescent properties.
  • a significant proportion of the carbon required for the flame retardant effect according to the intumescent principle is provided by the polymer material coated with the coating composition.
  • Such a coating composition without carbon-supplying component can be produced in excellent transparency.
  • the coating composition must be applied only in a small layer thickness.
  • the coated with the coating composition polymer material is particularly lightweight. It is particularly suitable for the production of textiles, components for vehicles, aircraft, ships, etc.
  • the polymer material a carbon content of ⁇ 20 wt.% To.
  • Such polymer materials are particularly suitable as part of the intumescent system.
  • the polymer material expediently provides a higher proportion of carbon, preferably at least 30% by weight and particularly preferably at least 40% by weight.
  • the coating composition also contains carbon and also serves as a carbon source.
  • a substantial portion of the carbon in the intumescent system is provided by the polymeric material.
  • the amount of carbon provided by the polymer material can be determined by examining a foam resulting from flame treatment for its carbon content. If the amount of carbon provided by the coating composition is deducted from the determined carbon content, the amount of carbon supplied by the polymer material is obtained.
  • suitable as part of the intumescent system according to the invention are those polymer materials in which a difference .DELTA.T between a melting temperature T s and a crystallization temperature T c of the polymer material in the range of 55 to 70 has.
  • the crystallization temperature T c is suitably ⁇ 200 ° C, preferably ⁇ 190 ° C.
  • the melting temperature T s is in the range from 50 ° C. to 400 ° C. or a decomposition temperature in the range from 100 ° C. to 500 ° C.
  • polymer materials having the abovementioned physical properties are particularly suitable as a carbon-supplying component in the intumescent system according to the invention. It has been observed that, especially in the case of such polymer materials, the coating composition penetrates into the interior of the polymer material in the event of fire and, with the cooperation of the polymer material, a flame-extinguishing foam development takes place.
  • polymer materials having a difference ⁇ T of significantly less than 40 K between their melting temperature T s and their crystallization temperature T c are less suitable as a component for the intumescent system.
  • the polymer material may be selected from the following group: polyester, polyamide, polyacrylate, Polyurethane, polyacrylonitrile, aramids and derivatives of the aforementioned polymers.
  • the intumescent system is a halogen and / or heavy metal-free system. Such a system does not develop any harmful gases in case of fire.
  • the proposed coating composition exhibits excellent transparency in the cured state.
  • the coating composition is particularly suitable for impregnating or coating textiles made from synthetic organic fibers.
  • the visual impression of the textile or an imprint thereof is in no way impaired by the coating composition according to the invention. On the contrary, it creates an excellent brilliance, which makes the color of the textile or a designated imprint even more appealing.
  • the synthetic organic fibers forming the textile in this case serve as a carbon source in the intumescent system.
  • the coating composition according to the present invention is designed to form an intumescent textile in combination with synthetic organic fibers. This can be achieved in comparison to the prior art, a drastic reduction of the basis weight of the textile.
  • the coating composition, in cooperation with the synthetic organic fibers, has an excellent flame retardant effect. It is particularly suitable for coating textiles such as curtains, tarpaulins, umbrellas, tents, awnings, clothing and the like.
  • the formation of a flame-retardant carbon foam is attributed in particular to the addition of the isocyanate or melamine-formaldehyde crosslinking agent.
  • isocyanate or melamine-formaldehyde crosslinking agent When thermoplastic organic fibers are used, further softening of the fibers under heat causes further crosslinking. This contributes significantly to the current state of knowledge to the formation of a stable carbon foam.
  • the flame retardant is an acid donor, wherein the acid donor is ammonium polyphosphate. Further, 0.1 to 1.0 wt% of a deaerating agent may be contained. Thus, the transparency of the coating formed by the coating composition can be further improved.
  • the polymeric material may be in the form of fibers or woven or knitted fabrics. Apart from that, other form-forming bodies may be made of the polymer material. It may, for example, to Interior cladding of vehicles, aircraft or ships, housing of electronic or electrical equipment, components of the construction industry, such as ventilation pipes, window frames, cable ducts or the like., Components of furniture, etc. act.
  • non-intumescent polymeric material forming the body as the carbon-supplying component of an intumescent system.
  • polymeric material forming a shape of a body is meant a polymeric material which is in solid form and suitable as a substrate for coating with a coating composition.
  • the polymeric material may be fibers, fabrics, knits or parts.
  • the intumescent system further components of the intumescent system are contained in a coating applied to the polymer material coating composition.
  • the inventively proposed intumescent system thus consists of at least two different materials, one of which forms the polymer material and the other the coating composition.
  • the weight of the green textile is 5.41 mg, that of the blue textile is 4.5 mg.
  • Both blue and green textiles are textiles made from polyester fibers.
  • the polyester fibers have not been coated with a coating composition.
  • the examined polyester fibers are polyester fibers with a different composition.
  • the polyester fiber referred to as blue textile has a melting temperature T s of about 257 ° C.
  • the crystallization temperature T c is about 215 ° C.
  • a difference ⁇ T between the melting temperature T s and the crystallization temperature T c in this case is about 42 ° C.
  • the blue textile is thus a reference textile.
  • the polymer material referred to as green textile has a melting temperature T s of 254 ° C and a crystallization temperature of only 187 ° C.
  • the difference ⁇ T between the Melting temperature T s and the crystallization temperature T c 67 ° C.
  • the aforementioned composition forms a matrix, which serves for the production of intumescent coating compositions.
  • the base may be added to other components, for. B. Fungicides and the like ..
  • the base for example, 1 g of Chinon AF Bode Chemie Hamburg be added.
  • Coating composition B Weighed in g Chemical composition brand name supplier purpose 100 matrix 6 ammonium polyphosphate Exolit AP 462 Clariant chemistry acid donors Weighed in g Chemical composition brand name supplier purpose 100 matrix 6 ammonium polyphosphate Exolit AP 462 Clariant GmbH acid donors 2 isocyanate Desmodur DA Bayer AG crosslinkers Weighed in g Chemical composition brand name supplier purpose 100 matrix 6 ammonium polyphosphate Exolit AP 462 Clariant chemistry acid donors 15 melamine CSC Jiffle Chemie GmbH propellant 2 isocyanate Desmodur DA Bayer AG crosslinkers Weighed in g Chemical composition brand name supplier purpose 100 matrix 6 ammonium polyphosphate Exolit AP 462 Clariant chemistry acid donors 15 melamine CSC Jiffle Chemie GmbH propellant 2 isocyanate Desmodur DA Bayer AG crosslinkers 20 pentaerythritol CSC Jiffle Chemie GmbH Carbon donor
  • the coating composition C contains no addition of a carbon source.
  • the test results clearly show that, according to the teaching of the invention, it is possible in particular to dispense with a carbon source in the coating composition if a suitable polymer material is used to produce the intumescent system.
  • the following table shows the results obtained with the coating composition C provided green and blue textiles in the fire protection test according to DIN 4102-B2: experimental parameters Textile blue *) Textile green *) Reaching the measuring mark 1 / edge test longitudinal direction 13 , /. Reaching the measuring mark 1 / edge test transverse direction 17 , /. End of afterburning / edge test longitudinal direction 60 14 End of afterburning / edge test transverse direction 45 10 *) Time in seconds from the beginning of the test , /. no occurrence of the event
  • Another polymer material has been investigated. It is a fabric made of polyamide with a basis weight of 60 g / m 2 .
  • the polyamide fabric has been coated under the aforementioned coating conditions with the coating compositions A1 to E1 described in the following tables in an amount of 85 g / m 2 .
  • the aforementioned composition forms a matrix 1, which serves for the production of intumescent coating compositions.
  • the base may be added to other components, for. B. fungicides and the like ..
  • the starting material may be added, for example, 1 g Chinon AF from Bode Chemie Hamburg.
  • Coating mass B1 Weighed in g Chemical composition brand name supplier purpose 100 Basic mass 1 6 ammonium polyphosphate Exolit AP 462 Clariant chemistry acid donors Weighed in g Chemical composition brand name supplier purpose 100 Basic mass 1 6 ammonium polyphosphate Exolit AP 462 Clariant GmbH acid donors 2 isocyanate Desmodur DA Bayer AG crosslinkers Weighed in g Chemical composition brand name supplier purpose 100 Basic mass 1 6 ammonium polyphosphate Exolit AP 462 Clariant chemistry acid donors 15 melamine CSC Jiffle Chemie GmbH propellant 2 isocyanate Desmodur DA Bayer AG crosslinkers Weighed in g Chemical composition brand name supplier purpose 100 Basic mass 1 6 ammonium polyphosphate Exolit AP 462 Clariant chemistry acid donors 15 melamine CSC Jiffle Chemie GmbH propellant 2 isocyanate Desmodur DA Bayer AG crosslinkers Weighed in g Chemical composition brand name supplier purpose 100 Basic mass 1 6 ammonium poly
  • polyamide is also suitable as polymer material for the production of the intumescent system according to the invention. Even with the use of polyamide, it is sufficient to coat the polymer material with the coating composition C1 in order to achieve a sufficient intumescent effect. It can be dispensed with in the coating composition, in particular an addition of propellant and carbon donors.
  • the aforementioned composition forms a matrix 2, which serves for the production of intumescent coating compositions.
  • the matrix 2 may be added to other components, for. B. fungicides and the like ..
  • Coating composition B2 Weighed in g Chemical composition brand name supplier purpose 100 Basic mass 2 6 ammonium polyphosphate Exolit AP 462 Clariant chemistry acid donors Weighed in g Chemical composition brand name supplier purpose 100 Basic mass 2 6 ammonium polyphosphate Exolit AP 462 Clariant GmbH acid donors 2 isocyanate Additive Z Bayer AG crosslinkers Weighed in g Chemical composition brand name supplier purpose 100 Basic mass 2 6 ammonium polyphosphate Exolit AP 462 Clariant chemistry acid donors 15 melamine CSC Jiffle Chemie GmbH propellant 2 isocyanate Additive Z Bayer AG crosslinkers Weighed in g Chemical composition brand name supplier purpose 100 Basic mass 2 6 ammonium polyphosphate Exolit AP 462 Clariant chemistry acid donors 15
  • the coating compositions C, C1 and C2 have excellent transparency. An imprint applied to the textile appears brilliant and is visible without any impairment. This is even true for a visible on both sides of the textile print.
  • the textile has a weight per unit area of less than 300 g / m 2 . Upon exposure to heat or flame, the material foams to form a carbon foam, which prevents further flame development.
  • the proposed intumescent textile uses the textile itself forming material as a carbon source for producing a carbon foam on flame exposure, a substantial reduction in basis weight can be achieved.
  • the intumescent properties are nevertheless outstanding.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Inorganic Chemistry (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Paints Or Removers (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Fireproofing Substances (AREA)
  • Laminated Bodies (AREA)

Description

Die Erfindung betrifft einen intumeszierenden Körper nach dem Oberbegriff des Anspruchs 1 sowie eine Verwendung nach Anspruch 17.The invention relates to an intumescent body according to the preamble of claim 1 and a use according to claim 17.

Die Erfindung betrifft allgemein das Gebiet flammhemmender intumeszierender Materialien bzw. Massen. Flammhemmende intumeszierende Massen sind u.a. mit einem Treibmittel und einem Flammhemmmittel versehene Kunstharze oder wässrige Kunstharzdispersionen, die bei Einwirkung von Hitze einen aus Kohlenstoff bestehenden Schaum bilden. Der Kunstharz dient dabei im Wesentlichen als Kohlenstofflieferant. Der Kohlenstoffschaum weist im Vergleich zur ursprünglichen Dicke der Überzugsmasse ein 10 bis 100-faches Volumen auf. Wegen seiner sehr geringen Wärmeleitfähigkeit schützt der Schaum ein damit überzogenes Material vor der Einwirkung von Flammen.The invention generally relates to the field of flame retardant intumescent materials or compositions. Flame-retardant intumescent compositions are i.a. synthetic resins provided with a blowing agent and a flame retardant, or aqueous synthetic resin dispersions which form a foam made of carbon when exposed to heat. The synthetic resin essentially serves as a carbon source. The carbon foam has a 10 to 100-fold volume compared to the original thickness of the coating composition. Because of its very low thermal conductivity, the foam protects a material coated therewith from exposure to flames.

Die DE 197 51 434 A1 beschreibt einen gattungsgemäßen intumeszierenden Körper. Der Körper ist aus einem die Form des Körpers bildenden nicht-intumeszierenden Polymermaterial, beispielsweise Kunststoff, und einer auf das Polymermaterial aufgebrachten intumeszierenden Überzugsmasse hergestellt. Die bekannte Überzugsmasse eignet sich mangels ausreichender Transparenz insbesondere nicht zur Beschichtung bedruckter Textilien.The DE 197 51 434 A1 describes a generic intumescent body. The body is made of a non-intumescent polymeric material, such as plastic, forming the shape of the body, and an intumescent coating applied to the polymeric material. The known coating composition is not suitable for coating printed textiles, in particular, for lack of sufficient transparency.

Aus der DE 38 01 456 A1 ist ein Verfahren zur Herstellung flammwidrig ausgerüsteter Polyurethanmassen bekannt. Es wird dabei auf einen Zusatz von Halogen- und/oder Schwermetallverbindungen verzichtet, welche bei einem Brand gesundheitsschädliche Gase bilden.From the DE 38 01 456 A1 is a method for preparing flame-retardant polyurethane compositions known. It is dispensed with an addition of halogen and / or heavy metal compounds which form harmful gases in a fire.

Die DE 40 41 470 A1 beschreibt eine intumeszierende Textilie, bei der zwischen zwei miteinander verbundenen Textilenflä-chengebilden eine Schicht eines körnigen Intumeszenzmittels vorgesehen ist.The DE 40 41 470 A1 describes an intumescent textile, in which between two interconnected textile Flächen- chengebilden a layer of a granular Intumeszenzmittels is provided.

Aus der DE 43 43 668 A1 ist eine intumeszierende flammhemmende Überzugsmasse bekannt, der als Flammhemmmittel u.a. Ammoniumpolyphosphat zugesetzt ist. Die Überzugsmasse enthält ferner als Treibmittel Melamin. Die bekannte Überzugsmasse eignet sich in Folge ihrer mangelnden Transparenz nicht zur Beschichtung bedruckter Textilien.From the DE 43 43 668 A1 is an intumescent flame-retardant coating composition is known, which is added as a flame retardant, inter alia, ammonium polyphosphate. The coating composition further contains melamine as the blowing agent. The known coating composition is not suitable for coating printed textiles as a result of their lack of transparency.

Die DE 196 08 612 C2 offenbart eine flammhemmende intumeszierende Überzugsmasse, die als Kunstharz Epoxydharz enthält. Die Überzugsmasse ist lösungsmittelhaltig; es können bis zu 65 Gew.% an Füllstoffen zugesetzt sein. Auch diese Überzugsmasse ist zur Beschichtung von Textilien nicht geeignet.The DE 196 08 612 C2 discloses a flame retardant intumescent coating composition which contains epoxy resin as the resin. The coating composition is solvent-containing; up to 65% by weight of fillers may be added. Also, this coating composition is not suitable for coating textiles.

US6248820 offenbart ein Maschentuch bevorzugt aus Polyester beschichtet mit einer Beschichtungszusammensetzung enthaltend a) 140 Teilen (37 Gew. %) EVA (50 Gew. % Feststoff), b) 100 Teilen (26 Gew. %) Polyurethan (30 Gew. % Feststoff), c) 2 Teilen (0.52 Gew. %) Isocyanat, d) 40 Teilen (10 Gew. %) Ammoniumpolyphosphat, e) 3 Teilen (0.78 Gew. %) roten Phosphor und f) 100 Teilen (26 Gew. %) Ammoniumhydroxid. US6248820 discloses a handkerchief preferably of polyester coated with a coating composition containing a) 140 parts (37% by weight) of EVA (50% by weight of solid), b) 100 parts (26% by weight) of polyurethane (30% by weight of solid), c ) 2 parts (0.52% by weight) of isocyanate, d) 40 parts (10% by weight) of ammonium polyphosphate, e) 3 parts (0.78% by weight) of red phosphorus and f) 100 parts (26% by weight) of ammonium hydroxide.

Um eine ausreichende Wirksamkeit zu gewährleisten, müssen intumeszierende Überzugsmassen in einer ausreichenden Schichtdicke auf den zu schützenden Körper aufgebracht werden. Das erhöht das Gewicht des Körpers. Eine solche Gewichtserhöhung ist insbesondere bei Körpern zur Verwendung in der Luftfahrtindustrie oder bei Textilien unerwünscht. Abgesehen davon erfordert die Herstellung herkömmlicher intumeszierender Überzugsmassen die Bereitstellung und Verarbeitung einer Vielzahl von unterschiedlichen Komponenten. Das erhöht unerwünschterweise deren Herstellungsaufwand. Schließlich weisen herkömmliche intumeszierende Überzugsmassen keine oder nur eine geringe Transparenz auf. Das schränkt die Freiheiten in der Oberflächengestaltung von mit intumeszierenden Massen zu überziehenden Körpern erheblich ein.In order to ensure sufficient effectiveness, intumescent coating compositions must be applied in sufficient thickness to the body to be protected. This increases the weight of the body. Such an increase in weight is particularly undesirable for bodies for use in the aerospace industry or textiles. Apart from that, the preparation of conventional intumescent coating compositions requires the provision and processing of a variety of different components. This increases undesirably the production cost. Finally, conventional intumescent coating compositions have little or no transparency. This significantly restricts the freedom of surface design of bodies to be coated with intumescent masses.

Aufgabe der Erfindung ist es, die Nachteile nach dem Stand der Technik zu beseitigen. Es soll insbesondere ein intumeszierendes System angegeben werden, das ein möglichst geringes Gewicht aufweist und ferner einfach und kostengünstig herstellbar ist. Des Weiteren soll eine Überzugsmasse des intumeszierenden Systems eine möglichst hohe Transparenz aufweisen, um beispielsweise einen auf einer Oberfläche des Körpers vorgesehener Aufdruck nicht zu beeinträchtigen.The object of the invention is to eliminate the disadvantages of the prior art. In particular, an intumescent system should be specified, which has the lowest possible weight and, furthermore, is simple and inexpensive to produce. Furthermore, a coating composition of the intumescent system should have the highest possible transparency, for example, not to interfere with an intended on a surface of the body imprint.

Diese Aufgabe wird gelöst durch Intumeszierender Körper hergestellt aus einem die Form des Körpers bildenden nicht-intumeszierenden Polymermaterial, welches eine Differenz AT zwischen einer Schmelztemperatur Ts und einer Kristallisationstemperatur Tc des Polymermaterials im Bereich von 55 bis 70 K aufweist, und einer auf das Polymermaterial aufgebrachten transparenten Überzugsmasse,wobei die Überzugsmasse die folgende Zusammensetzung aufweist:25 bis 95 Gew.% einer Polyurethan oder Polyacrylat enthaltenden wässrigen Dispersion,0,5 bis 10 Gew.% eines Isocyanats oder eines Melamin-Formaldehyds und3 bis 15 Gew.% Ammoniumpolyphosphat als Flammhemmmittel,wobei das Polymermaterial zusammen mit der Überzugsmasse ein intumeszierendes System ergibt, bei dem die Überzugsmasse im Brandfalle ins Innere des eine Kohlenstoff-lieferende Komponente bildenden Polymermaterials eindringt und unter Mitwirkung des Polymermaterials eine flammlöschende Schaumentwicklung stattfindet, wobei das Polymermaterial einen Anteil von zumindest 20 Gew.% des Kohlenstoffs im intumeszierenden System bereitstellt.This object is achieved by an intumescent body made of a non-intumescent polymer material forming the body which has a difference ΔT between a melting temperature Ts and a crystallization temperature Tc of the polymer material in the range of 55 to 70 K, and a transparent one applied to the polymer material A coating composition, the coating composition having the following composition: 25 to 95% by weight of a polyurethane or polyacrylate-containing aqueous dispersion, 0.5 to 10% by weight of an isocyanate or a melamine-formaldehyde and 3 to 15% by weight of ammonium polyphosphate as a flame retardant, wherein the polymer material together with the coating composition gives an intumescent system, in which case the coating composition penetrates into the interior of the polymer material forming a carbon-supplying component in the event of fire and a flame-extinguishing foam development takes place in cooperation with the polymer material, the polymer material provides a proportion of at least 20% by weight of the carbon in the intumescent system.

Nach Maßgabe der Erfindung ist vorgesehen, dass das Polymermaterial zusammen mit der Überzugsmasse ein intumeszierendes System ergibt, bei dem das Polymermaterial eine Kohlenstoff-liefernde Komponente bildet. - In Abkehr vom Stand der Technik sind die Komponenten des intumeszierenden Systems nicht mehr ausschließlich in einem Stoff bzw. einer Masse mit intumeszierenden Eigenschaften enthalten. Ein wesentlicher Anteil des für die flammhemmende Wirkung nach dem Intumeszenzprinzip notwendigen Kohlenstoffs wird durch das mit der Überzugsmasse beschichtete Polymermaterial bereitgestellt. Infolgedessen kann auf den gesonderten Zusatz einer Kohlenstoff-liefernden Komponente in der Überzugsmasse verzichtet werden. Eine solche Überzugsmasse ohne Kohlenstoff-liefernde Komponente kann in einer hervorragenden Transparenz hergestellt werden. Zum Erreichen einer intumeszierenden Wirkung muss die Überzugsmasse lediglich in einer geringen Schichtdicke aufgebracht werden. Das mit der Überzugsmasse beschichtete Polymermaterial ist besonders leichtgewichtig. Es eignet sich insbesondere zur Herstellung von Textilien, Bauteilen für Fahrzeuge, Flugzeuge, Schiffe usw..According to the invention it is provided that the polymer material together with the coating composition results in an intumescent system in which the polymer material forms a carbon-supplying component. In departure from the prior art, the components of the intumescent system are no longer contained exclusively in a substance or a mass with intumescent properties. A significant proportion of the carbon required for the flame retardant effect according to the intumescent principle is provided by the polymer material coated with the coating composition. As a result, can be dispensed with the separate addition of a carbon-supplying component in the coating composition. Such a coating composition without carbon-supplying component can be produced in excellent transparency. To achieve an intumescent effect, the coating composition must be applied only in a small layer thickness. The coated with the coating composition polymer material is particularly lightweight. It is particularly suitable for the production of textiles, components for vehicles, aircraft, ships, etc.

Nach einer vorteilhaften Ausgestaltung weist das Polymermaterial einen Kohlenstoffgehalt von ≥ 20 Gew.% auf. Derartige Polymermaterialien eignen sich besonders gut als Bestandteil des intumeszierenden Systems. Zweckmäßigerweise stellt das Polymermaterial aber einen höheren Anteil an Kohlenstoff bereit, vorzugsweise zumindest 30 Gew.% und besonders bevorzugt zumindest 40 Gew.%. Die Überzugsmasse enthält ebenfalls Kohlenstoff und dient insoweit ebenfalls als Kohlenstofflieferant. Ein wesentlicher Anteil des Kohlenstoffs im intumeszierenden System wird aber durch das Polymermaterial bereitgestellt. Die Menge des vom Polymermaterial bereitgestellten Kohlenstoffs kann dadurch ermittelt werden, dass ein nach einer Beflammung entstandener Schaum im Hinblick auf seinen Kohlenstoffgehalt untersucht wird. Zieht man von dem ermittelten Kohlenstoffgehalt die Menge des von der Überzugsmasse bereitgestellten Kohlenstoffs ab, so erhält man die Menge des vom Polymermaterial gelieferten Kohlenstoffs.According to an advantageous embodiment, the polymer material a carbon content of ≥ 20 wt.% To. Such polymer materials are particularly suitable as part of the intumescent system. However, the polymer material expediently provides a higher proportion of carbon, preferably at least 30% by weight and particularly preferably at least 40% by weight. The coating composition also contains carbon and also serves as a carbon source. However, a substantial portion of the carbon in the intumescent system is provided by the polymeric material. The amount of carbon provided by the polymer material can be determined by examining a foam resulting from flame treatment for its carbon content. If the amount of carbon provided by the coating composition is deducted from the determined carbon content, the amount of carbon supplied by the polymer material is obtained.

Es hat sich herausgestellt, dass als Bestandteil des erfindungsgemäßen intumeszierenden Systems solche Polymermaterialien geeignet sind, bei denen eine Differenz Δ T zwischen einer Schmelztemperatur Ts und einer Kristallisationstemperatur Tc des Polymermaterials im Bereich von 55 bis 70 aufweist. Die Kristallisationstemperatur Tc ist zweckmäßigerweise ≤ 200°C, vorzugsweise ≤ 190°C. Weiter hat es sich als zweckmäßig erwiesen, das Polymermaterial so auszuwählen, dass die Schmelztemperatur Ts im Bereich von 50°C bis 400°C oder eine Zersetzungstemperatur im Bereich von 100°C bis 500°C liegt. Es hat sich gezeigt, dass Polymermaterialien mit den vorgenannten physikalischen Eigenschaften sich besonders gut als Kohlenstoff-liefernde Komponente im erfindungsgemäßen intumeszierenden System eignen. Es ist beobachtet worden, dass gerade bei solchen Polymermaterialien die Überzugsmasse im Brandfalle ins Innere des Polymermaterials eindringt und unter Mitwirkung des Polymermaterials eine flammlöschende Schaumentwicklung stattfindet. Versuche haben gezeigt, dass Polymermaterialien, welche eine Differenz Δ T von deutlich weniger als 40 K zwischen ihrer Schmelztemperatur Ts und ihrer Kristallisationstemperatur Tc aufweisen, weniger gut als Komponente für das intumeszierende System geeignet sind. - Das Polymermaterial kann aus der folgenden Gruppe ausgewählt sein: Polyester, Polyamid, Polyacrylat, Polyurethan, Polyacrylnitril, Aramide und Derivate der vorgenannten Polymere.It has been found that suitable as part of the intumescent system according to the invention are those polymer materials in which a difference .DELTA.T between a melting temperature T s and a crystallization temperature T c of the polymer material in the range of 55 to 70 has. The crystallization temperature T c is suitably ≤ 200 ° C, preferably ≤ 190 ° C. Furthermore, it has proven expedient to select the polymer material such that the melting temperature T s is in the range from 50 ° C. to 400 ° C. or a decomposition temperature in the range from 100 ° C. to 500 ° C. It has been found that polymer materials having the abovementioned physical properties are particularly suitable as a carbon-supplying component in the intumescent system according to the invention. It has been observed that, especially in the case of such polymer materials, the coating composition penetrates into the interior of the polymer material in the event of fire and, with the cooperation of the polymer material, a flame-extinguishing foam development takes place. Experiments have shown that polymer materials having a difference Δ T of significantly less than 40 K between their melting temperature T s and their crystallization temperature T c are less suitable as a component for the intumescent system. The polymer material may be selected from the following group: polyester, polyamide, polyacrylate, Polyurethane, polyacrylonitrile, aramids and derivatives of the aforementioned polymers.

Nach einer weiteren Ausgestaltung ist das intumeszierende System eine Halogen- und/oder Schwermetall-freies System. Ein solches System entwickelt im Brandfalle keine besonders gesundheitsschädlichen Gase.According to a further embodiment, the intumescent system is a halogen and / or heavy metal-free system. Such a system does not develop any harmful gases in case of fire.

Als Überzugsmasse kommen grundsätzlich herkömmliche Überzugsmassen in Betracht, wobei allerdings auf den gesonderten Zusatz einer Kohlenstoff-liefernden Komponente verzichtet werden kann. Die Überzugsmasse enthält vorteilhafterweise ein Flammhemmmittel. Das erfindungsgemäße intumeszierende System hat sich eine Überzugsmasse der folgenden Zusammensetzung erwiesen:

  • 25 bis 95 Gew.% einer Polyurethan oder Polyacrylat enthaltenden wässrigen Dispersion,
  • 0,5 bis 10 Gew.% eines Isocyanats oder eines Melamin-Formaldehyds und
  • 3 bis 15 Vol.% eines Flammhemmmittels.
In principle, conventional coating compositions may be considered as the coating composition, although the separate addition of a carbon-supplying component may be dispensed with. The coating composition advantageously contains a flame retardant. The intumescent system according to the invention has proven to have a coating composition of the following composition:
  • From 25 to 95% by weight of a polyurethane or polyacrylate-containing aqueous dispersion,
  • 0.5 to 10 wt.% Of an isocyanate or a melamine-formaldehyde and
  • 3 to 15% by volume of a flame retardant.

Die vorgeschlagene Überzugsmasse weist im ausgehärteten Zustand eine hervorragende Transparenz auf. Die Überzugsmasse eignet sich insbesondere zur Imprägnierung oder Beschichtung von aus synthetischen organischen Fasern hergestellten Textilien. Der optische Eindruck der Textilie oder eines Aufdrucks derselben wird durch die erfindungsgemäße Überzugsmasse in keiner Weise beeinträchtigt. Es entsteht im Gegenteil eine hervorragende Brillanz, welche die Farbe der Textilie bzw. einen darauf vorgesehenen Aufdruck noch ansprechender erscheinen lässt.The proposed coating composition exhibits excellent transparency in the cured state. The coating composition is particularly suitable for impregnating or coating textiles made from synthetic organic fibers. The visual impression of the textile or an imprint thereof is in no way impaired by the coating composition according to the invention. On the contrary, it creates an excellent brilliance, which makes the color of the textile or a designated imprint even more appealing.

Die die Textilie bildenden synthetischen organischen Fasern dienen in diesem Fall im intumeszierenden System als Kohlenstofflieferant. Es kann in Abkehr vom Stand der Technik auf eine den Kohlenstofflieferanten bildende Komponente in der Überzugsmasse verzichtet werden. Die Überzugsmasse gemäß der vorliegenden Erfindung ist so ausgebildet, dass sie in Kombination mit synthetischen organischen Fasern eine intumeszierende Textilie bildet. Damit kann im Vergleich zum Stand der Technik eine drastische Reduzierung des Flächengewichts der Textilie erreicht werden. Die Überzugsmasse weist in Zusammenwirken mit den synthetischen organischen Fasern eine hervorragende flammhemmende Wirkung auf. Sie eignet sich insbesondere zur Beschichtung von Textilien wie Vorhängen, Zeltplanen, Sonnenschirmen, Zelten, Markisen, Bekleidungsstücken und dgl..The synthetic organic fibers forming the textile in this case serve as a carbon source in the intumescent system. As a departure from the prior art, it is possible to dispense with a component which forms the carbon promoter in the coating composition. The coating composition according to the present invention is designed to form an intumescent textile in combination with synthetic organic fibers. This can be achieved in comparison to the prior art, a drastic reduction of the basis weight of the textile. The coating composition, in cooperation with the synthetic organic fibers, has an excellent flame retardant effect. It is particularly suitable for coating textiles such as curtains, tarpaulins, umbrellas, tents, awnings, clothing and the like.

Die Bildung eines flammhemmenden Kohlenstoffschaums wird insbesondere auf den Zusatz des als Vernetzungsmittel wirkenden Isocyanats oder Melamin-Formaldehyds zurückgeführt. Bei der Verwendung thermoplastischer organischer Fasern wird bei Erweichung der Fasern unter Hitzeeinwirkung eine weitere Vernetzung bewirkt. Das trägt nach derzeitigem Kenntnisstand wesentlich zur Bildung eines stabilen Kohlenstoffschaums bei.The formation of a flame-retardant carbon foam is attributed in particular to the addition of the isocyanate or melamine-formaldehyde crosslinking agent. When thermoplastic organic fibers are used, further softening of the fibers under heat causes further crosslinking. This contributes significantly to the current state of knowledge to the formation of a stable carbon foam.

Nach einer erfindungsgemäßen Ausgestaltung ist das Flammhemmmittel ein Säurespender, wobei der Säurespender Ammoniumpolyphosphat ist. Des Weiteren kann 0,1 bis 1,0 Gew.% eines Mittels zum Entlüften enthalten sein. Damit kann die Transparenz der durch die Überzugsmasse gebildeten Beschichtung weiter verbessert werden.According to an embodiment of the invention, the flame retardant is an acid donor, wherein the acid donor is ammonium polyphosphate. Further, 0.1 to 1.0 wt% of a deaerating agent may be contained. Thus, the transparency of the coating formed by the coating composition can be further improved.

Des Weiteren können auch 0,1 bis 1,5 Gew.% eines Insektizids und/oder eines Bakterizids enthalten sein. Das erhöht die Lebensdauer der Textilie.Furthermore, it is also possible for 0.1 to 1.5% by weight of an insecticide and / or a bactericide to be present. This increases the life of the textile.

Das Polymermaterial kann in Form von Fasern oder daraus hergestellten Geweben oder Gewirken vorliegen. Abgesehen davon, können aus dem Polymermaterial auch andere eine Form bildende Körper hergestellt sein. Es kann sich dabei beispielsweise um Verkleidungen im Innenbereich von Fahrzeugen, Flugzeugen oder Schiffen, um Gehäuse von elektronischen oder elektrotechnischen Vorrichtungen, um Bauteile aus dem Bauwesen, beispielsweise Lüftungsrohre, Fensterrahmen, Kabelkanäle oder dgl., Bestandteile von Möbeln usw. handeln.The polymeric material may be in the form of fibers or woven or knitted fabrics. Apart from that, other form-forming bodies may be made of the polymer material. It may, for example, to Interior cladding of vehicles, aircraft or ships, housing of electronic or electrical equipment, components of the construction industry, such as ventilation pipes, window frames, cable ducts or the like., Components of furniture, etc. act.

Nach weiterer Maßgabe ist die Verwendung eines die Form eines Körpers bildenden nicht-intumeszierenden Polymermaterials als Kohlenstoff-liefernden Komponente eines intumeszierenden Systems vorgesehen. Unter einem "eine Form eines Körpers bildenden Polymermaterial" wird ein Polymermaterial verstanden, welches in fester Form vorliegt und sich als Substrat zur Beschichtung mit einer Überzugsmasse eignet. Es kann sich bei dem Polymermaterial um Fasern, Gewebe, Gewirke oder Teile handeln.It is further contemplated to use a non-intumescent polymeric material forming the body as the carbon-supplying component of an intumescent system. By "polymeric material forming a shape of a body" is meant a polymeric material which is in solid form and suitable as a substrate for coating with a coating composition. The polymeric material may be fibers, fabrics, knits or parts.

Nach einer vorteilhaften Ausgestaltung sind weitere Komponenten des intumeszierenden Systems in einer auf das Polymermaterial aufgebrachten Überzugsmasse enthalten. Das erfindungsgemäß vorgeschlagene intumeszierende System besteht also zumindest aus zwei unterschiedlichen Stoffen, von denen einer das Polymermaterial und der andere die Überzugsmasse bildet.According to an advantageous embodiment, further components of the intumescent system are contained in a coating applied to the polymer material coating composition. The inventively proposed intumescent system thus consists of at least two different materials, one of which forms the polymer material and the other the coating composition.

Wegen der vorteilhaften Ausgestaltungen der Verwendung wird auf die vorgenannten Merkmale verwiesen, welche sinngemäß auch für die Verwendung gelten.Because of the advantageous embodiments of the use reference is made to the aforementioned features, which mutatis mutandis apply to the use.

Nachfolgend werden Ausführungsbeispiele der Erfindung, insbesondere anhand der Zeichnungen näher erläutert. Es zeigen:

Fig. 1
eine thermische Analyse des Aufheizens eines blauen Textils,
Fig. 2
eine thermische Analyse des Abkühlens des blauen Textils,
Fig.3
eine thermische Analyse des Aufheizens eines grünes Textils und
Fig. 4
eine thermische Analyse des Abkühlens des grünen Textils.
Embodiments of the invention, in particular with reference to the drawings will be explained in more detail. Show it:
Fig. 1
a thermal analysis of the heating of a blue textile,
Fig. 2
a thermal analysis of the cooling of the blue textile,
Figure 3
a thermal analysis of heating up a green textile and
Fig. 4
a thermal analysis of the cooling of the green textile.

Bei den in Fig. 1 bis 4 gezeigten Ergebnissen handelt es sich um Ergebnisse einer dynamischen thermischen Analyse nach dem Verfahren der "Differential Scanning Calorimetry" (DSC). Die thermischen Analysen sind unter Verwendung des folgenden Temperaturprogramms durchgeführt worden: Aufheizrate: 10°C/min Starttemperatur: 25°C maximale Temperatur: 300°C Haltezeit bei der Maximaltemperatur: 3 min At the in Fig. 1 to 4 The results shown are results of a dynamic thermal analysis according to the method of differential scanning calorimetry (DSC). The thermal analyzes have been carried out using the following temperature program: heating rate: 10 ° C / min Starting temperature: 25 ° C maximum temperature: 300 ° C Holding time at the maximum temperature: 3 min

Die Einwaage des grünen Textils hat 5,41 mg, die des blauen Textils 4,5 mg betragen. Sowohl beim blauen als auch beim grünen Textil handelt es sich um ein Textil, welches aus Polyesterfasern hergestellt worden ist. Die Polyesterfasern sind nicht mit einer Überzugsmasse beschichtet worden. Es handelt sich bei den untersuchten Polyesterfasern um Polyesterfasern mit einer unterschiedlichen Zusammensetzung.The weight of the green textile is 5.41 mg, that of the blue textile is 4.5 mg. Both blue and green textiles are textiles made from polyester fibers. The polyester fibers have not been coated with a coating composition. The examined polyester fibers are polyester fibers with a different composition.

Aus Fig. 1 ist ersichtlich, dass die als blaues Textil bezeichnete Polyesterfaser eine Schmelztemperatur Ts von etwa 257°C aufweist. Wie aus Fig. 2 hervorgeht, liegt die Krisallisationstemperatur Tc bei etwa 215°C. Eine Differenz Δ T zwischen der Schmelztemperatur Ts und der Kristallisationstemperatur Tc beträgt in diesem Fall etwa 42°C. Das blaue Textil ist somit ein Referenztextil. Wie aus den Fig. 3 und 4 ersichtlich ist, weist das als grünes Textil bezeichnete Polymermaterial eine Schmelztemperatur Ts von 254°C und eine Kristallisationstemperatur von lediglich 187°C auf. Hier beträgt die Differenz Δ T zwischen der Schmelztemperatur Ts und der Kristallisationstemperatur Tc 67°C.Out Fig. 1 It can be seen that the polyester fiber referred to as blue textile has a melting temperature T s of about 257 ° C. How out Fig. 2 As can be seen, the crystallization temperature T c is about 215 ° C. A difference Δ T between the melting temperature T s and the crystallization temperature T c in this case is about 42 ° C. The blue textile is thus a reference textile. Like from the Fig. 3 and 4 it can be seen, the polymer material referred to as green textile has a melting temperature T s of 254 ° C and a crystallization temperature of only 187 ° C. Here, the difference Δ T between the Melting temperature T s and the crystallization temperature T c 67 ° C.

In weiteren Versuchen sind die als grünes und blaues Textil bezeichneten Polymermaterialien mit Überzugsmassen der folgenden Zusammensetzungen überzogen worden: Überzugsmasse A (= Grundmasse) Einwaage in g Chemische Zusammensetzung Markenname Lieferant Zweck 80 Polyurethan Impranil DLS Bayer AG Bindemittel 20 Wasser 0,5 Polysiloxan Agitan 256 Münzing Chemie GmbH Entschäumer 1,5 Polyurethan Tafigel PUR 61 Münzing Chemie GmbH Verdicker In further experiments, the polymer materials referred to as green and blue textile have been coated with coating compositions of the following compositions: Coating mass A (= basic mass) Weighed in g Chemical composition brand name supplier purpose 80 polyurethane Impranil DLS Bayer AG binder 20 water 0.5 polysiloxane Agitan 256 Münzing Chemie GmbH defoamers 1.5 polyurethane Tafigel PUR 61 Münzing Chemie GmbH thickener

Die vorgenannte Masse bildet eine Grundmasse, welche zur Herstellung intumeszierender Überzugsmassen dient. Der Grundmasse können weitere Komponenten zugesetzt sein, z. B. Fungizide und dgl.. Als Fungizid kann der Grundmasse beispielsweise 1 g Chinon AF der Firma Bode Chemie Hamburg zugesetzt sein. Überzugsmasse B Einwaage in g Chemische Zusammensetzung Markenname Lieferant Zweck 100 Grundmasse 6 Ammoniumpolyphosphat Exolit AP 462 Clariant Chemie Säurespender Überzugsmasse C Einwaage in g Chemische Zusammensetzung Markenname Lieferant Zweck 100 Grundmasse 6 Ammoniumpolyphosphat Exolit AP 462 Clariant GmbH Säurespender 2 Isocyanat Desmodur DA Bayer AG Vernetzer Überzugsmasse D Einwaage in g Chemische Zusammensetzung Markenname Lieferant Zweck 100 Grundmasse 6 Ammoniumpolyphosphat Exolit AP 462 Clariant Chemie Säurespender 15 Melamin CSC Jäckle Chemie GmbH Treibmittel 2 Isocyanat Desmodur DA Bayer AG Vernetzer Überzugsmasse E Einwaage in g Chemische Zusammensetzung Markenname Lieferant Zweck 100 Grundmasse 6 Ammoniumpolyphosphat Exolit AP 462 Clariant Chemie Säurespender 15 Melamin CSC Jäckle Chemie GmbH Treibmittel 2 Isocyanat Desmodur DA Bayer AG Vernetzer 20 Pentaerythrit CSC Jäckle Chemie GmbH Kohlenstoffspender The aforementioned composition forms a matrix, which serves for the production of intumescent coating compositions. The base may be added to other components, for. B. Fungicides and the like .. As a fungicide, the base, for example, 1 g of Chinon AF Bode Chemie Hamburg be added. Coating composition B Weighed in g Chemical composition brand name supplier purpose 100 matrix 6 ammonium polyphosphate Exolit AP 462 Clariant chemistry acid donors Weighed in g Chemical composition brand name supplier purpose 100 matrix 6 ammonium polyphosphate Exolit AP 462 Clariant GmbH acid donors 2 isocyanate Desmodur DA Bayer AG crosslinkers Weighed in g Chemical composition brand name supplier purpose 100 matrix 6 ammonium polyphosphate Exolit AP 462 Clariant chemistry acid donors 15 melamine CSC Jäckle Chemie GmbH propellant 2 isocyanate Desmodur DA Bayer AG crosslinkers Weighed in g Chemical composition brand name supplier purpose 100 matrix 6 ammonium polyphosphate Exolit AP 462 Clariant chemistry acid donors 15 melamine CSC Jäckle Chemie GmbH propellant 2 isocyanate Desmodur DA Bayer AG crosslinkers 20 pentaerythritol CSC Jäckle Chemie GmbH Carbon donor

Die Überzugsmassen A bis E sind sowohl auf das blaue als auch auf das grüne Textil in einer Menge von 85 g/m2 aufgetragen worden und zwar unter Verwendung einer Luftrakel bei einer Geschwindigkeit von 8 m/min. Zur Trocknung und Fixierung ist das mit der Überzugsmasse versehene Textil wie folgt thermisch behandelt worden:

  • Aufheizen auf 100°C, Haltezeit 2 min,
  • Aufheizen auf 130°C, Haltezeit 1 min,
  • Aufheizen auf 150°C, Haltezeit 1 min.
The coating compositions A to E are applied to both the blue and the green textile in an amount of 85 g / m 2 using an air knife at a speed of 8 m / min. For drying and fixing, the textile provided with the coating composition has been thermally treated as follows:
  • Heating up to 100 ° C, holding time 2 min,
  • Heating up to 130 ° C, holding time 1 min,
  • Heating up to 150 ° C, holding time 1 min.

Anschließend sind die so beschichteten Polymermaterialien einer Beflammungsprüfung gemäß der in Deutschland gültigen Norm DIN 4102-B2 unterzogen worden. Es sind dabei die folgenden Parameter verwendet worden: Gas: Propan Abluftgeschwindigkeit: 0,7 m/s Flammenhöhe: 20 mm Abstand Textil/Flamme: 16 mm Beflammungszeit: 15 s Subsequently, the polymer materials coated in this way have been subjected to a flammability test in accordance with the standard DIN 4102-B2 valid in Germany. The following parameters have been used: Gas: propane Exhaust speed: 0.7 m / s Flame height: 20 mm Distance textile / flame: 16 mm Flaming time: 15 s

Unter Verwendung der Überzugsmassen A bis E gemäß der vorstehenden Tabellen sind bei der Beflammungsprüfung gemäß DIN 4102-B2 die aus der nachfolgenden Tabelle ersichtlichen Ergebnisse für das grüne Textil erzielt worden erzielt worden: Material Beflammung Kantentest Längsrichtung *) Kantentest Querrichtung *) Rezeptur-Nr. A B C D E A B C D E Erreichen d. Messmarke 1) 15 17 . / . . / . . / . 17 18 . / . . / . . / . Selbstverlöschen der Flammen, Ende des Nachbrennens 42 35 - 14 12 12 38 33 10 10 12 *) Zeitangaben in Sekunden ab Versuchsbeginn
. / . Kein Auftreten des Ereignisses Using the coating compositions A to E according to the above tables, the results for the green textile shown in the table below have been achieved in the flame test according to DIN 4102-B2: material flame Longitudinal edge test *) Edge test transverse direction *) Recipe no. A B C D e A B C D e Achieve d. Measuring mark 1) 15 17 , /. , /. , /. 17 18 , /. , /. , /. Self extinguishing the flames, end of afterburning 42 35 - 14 12 12 38 33 10 10 12 *) Time in seconds from the beginning of the test
, /. No occurrence of the event

Es zeigt sich, dass das grüne Textil bereits mit der Überzugsmasse C die Kriterien der Beflammungsprüfung gemäß der Norm DIN 4102-B2 erfüllt. Die Überzugsmasse C enthält keinen Zusatz eines Kohlenstofflieferanten. Die Versuchsergebnisse zeigen klar, dass entsprechend der erfindungsgemäßen Lehre insbesondere auf einen Kohlenstofflieferanten in der Überzugsmasse verzichtet werden kann, wenn ein geeignetes Polymermaterial zur Herstellung des intumeszierenden Systems verwendet wird.It turns out that the green textile already meets the criteria of the flame test according to the standard DIN 4102-B2 with the coating composition C. The coating composition C contains no addition of a carbon source. The test results clearly show that, according to the teaching of the invention, it is possible in particular to dispense with a carbon source in the coating composition if a suitable polymer material is used to produce the intumescent system.

In der folgenden Tabelle sind die Ergebnisse wiedergegeben, die mit der Überzugsmasse C versehenen grünen und blauen Textilien bei der Brandschutzprüfung gemäß DIN 4102-B2 erzielt worden sind: Versuchsparameter Textil blau*) Textil grün*) Erreichen der Messmarke 1/ Kantentest-Längsrichtung 13 . / . Erreichen der Messmarke 1/ Kantentest-Querrichtung 17 . / . Ende des Nachbrennens/ Kantentest-Längsrichtung 60 14 Ende des Nachbrennens/ Kantentest-Querrichtung 45 10 *) Zeitangaben in Sekunden ab Versuchsbeginn
. / . kein Auftreten des Ereignisses The following table shows the results obtained with the coating composition C provided green and blue textiles in the fire protection test according to DIN 4102-B2: experimental parameters Textile blue *) Textile green *) Reaching the measuring mark 1 / edge test longitudinal direction 13 , /. Reaching the measuring mark 1 / edge test transverse direction 17 , /. End of afterburning / edge test longitudinal direction 60 14 End of afterburning / edge test transverse direction 45 10 *) Time in seconds from the beginning of the test
, /. no occurrence of the event

In einem weiteren Referenzversuch ist ein weiteres Polymermaterial untersucht worden. Es handelt sich dabei um ein aus Polyamid hergestelltes Gewebe mit einem Flächengewicht von 60 g/m2. Das Polyamid-Gewebe ist unter den vorgenannten Beschichtungsbedingungen mit den in den folgenden Tabellen beschriebenen Überzugsmassen A1 bis E1 in einer Menge von 85 g/m2 beschichtet worden. Überzugsmasse A1 (= Grundmasse 1) Einwaage in g Chemische Zusammensetzung Markenname Lieferant Zweck 80 Polyurethan Impranil DLF Bayer AG Bindemittel 20 Wasser 0,5 Polysiloxan Agitan 256 Münzing Chemie GmbH Entschäumer 1,5 Polyurethan Tafigel PUR 61 Münzing Chemie GmbH Verdicker In another reference experiment, another polymer material has been investigated. It is a fabric made of polyamide with a basis weight of 60 g / m 2 . The polyamide fabric has been coated under the aforementioned coating conditions with the coating compositions A1 to E1 described in the following tables in an amount of 85 g / m 2 . Coating mass A1 (= basic mass 1) Weighed in g Chemical composition brand name supplier purpose 80 polyurethane Impranil DLF Bayer AG binder 20 water 0.5 polysiloxane Agitan 256 Münzing Chemie GmbH defoamers 1.5 polyurethane Tafigel PUR 61 Münzing Chemie GmbH thickener

Die vorgenannte Masse bildet eine Grundmasse 1, welche zur Herstellung intumeszierender Überzugsmassen dient. Der Grundmasse können weitere Komponenten zugesetzt sein, z. B. Fungizide und dgl.. Als Fungizid kann der Ausgangsmasse beispielsweise 1 g Chinon AF der Firma Bode Chemie Hamburg zugesetzt sein. Überzugsmasse B1 Einwaage in g Chemische Zusammensetzung Markenname Lieferant Zweck 100 Grundmasse 1 6 Ammoniumpolyphosphat Exolit AP 462 Clariant Chemie Säurespender Überzugsmasse C1 Einwaage in g Chemische Zusammensetzung Markenname Lieferant Zweck 100 Grundmasse 1 6 Ammoniumpolyphosphat Exolit AP 462 Clariant GmbH Säurespender 2 Isocyanat Desmodur DA Bayer AG Vernetzer Überzugsmasse D1 Einwaage in g Chemische Zusammensetzung Markenname Lieferant Zweck 100 Grundmasse 1 6 Ammoniumpolyphosphat Exolit AP 462 Clariant Chemie Säurespender 15 Melamin CSC Jäckle Chemie GmbH Treibmittel 2 Isocyanat Desmodur DA Bayer AG Vernetzer Überzugsmasse E1 Einwaage in g Chemische Zusammensetzung Markenname Lieferant Zweck 100 Grundmasse 1 6 Ammoniumpolyphosphat Exolit AP 462 Clariant Chemie Säurespender 15 Melamin CSC Jäckle Chemie GmbH Treibmittel 2 Isocyanat Desmodur DA Bayer AG Vernetzer 20 Pentaerythrit CSC Jäckle Chemie GmbH Kohlenstoffspender The aforementioned composition forms a matrix 1, which serves for the production of intumescent coating compositions. The base may be added to other components, for. B. fungicides and the like .. As a fungicide, the starting material may be added, for example, 1 g Chinon AF from Bode Chemie Hamburg. Coating mass B1 Weighed in g Chemical composition brand name supplier purpose 100 Basic mass 1 6 ammonium polyphosphate Exolit AP 462 Clariant chemistry acid donors Weighed in g Chemical composition brand name supplier purpose 100 Basic mass 1 6 ammonium polyphosphate Exolit AP 462 Clariant GmbH acid donors 2 isocyanate Desmodur DA Bayer AG crosslinkers Weighed in g Chemical composition brand name supplier purpose 100 Basic mass 1 6 ammonium polyphosphate Exolit AP 462 Clariant chemistry acid donors 15 melamine CSC Jäckle Chemie GmbH propellant 2 isocyanate Desmodur DA Bayer AG crosslinkers Weighed in g Chemical composition brand name supplier purpose 100 Basic mass 1 6 ammonium polyphosphate Exolit AP 462 Clariant chemistry acid donors 15 melamine CSC Jäckle Chemie GmbH propellant 2 isocyanate Desmodur DA Bayer AG crosslinkers 20 pentaerythritol CSC Jäckle Chemie GmbH Carbon donor

Das mit den Überzugsmassen A1 bis E1 beschichtete Polyamid-Gewebe ist entsprechend den vorbeschriebenen Bedingungen einer Beflammungsprüfung gemäß DIN 4102-B2 unterzogen worden. Dabei sind die aus der nachfolgenden Tabelle ersichtlichen Ergebnisse erzielt worden: Material Beflammung Kantentest Längsrichtung *) Kantentest Querrichtung *) Rezeptur-Nr. A1 B1 C1 D1 E1 A1 B1 C1 D1 E1 Erreichen d. Messmarke 1) 12 15 . / . . / . . / . 17 18 . / . . / . . / . Selbstverlöschen der Flammen, Ende des Nachbrennens 33 37 12 10 10 38 33 8 12 10 *) Zeitangaben in Sekunden ab Versuchsbeginn
. / . Kein Auftreten des Ereignisses The coated with the coating compositions A1 to E1 polyamide fabric has been subjected according to the conditions described above a flame test according to DIN 4102-B2. The results shown in the table below have been achieved: material flame Longitudinal edge test *) Edge test transverse direction *) Recipe no. A1 B1 C1 D1 E1 A1 B1 C1 D1 E1 Achieve d. Measuring mark 1) 12 15 , /. , /. , /. 17 18 , /. , /. , /. Self extinguishing the flames, end of afterburning 33 37 12 10 10 38 33 8th 12 10 *) Time in seconds from the beginning of the test
, /. No occurrence of the event

Die Ergebnisse zeigen klar, dass auch Polyamid sich als Polymermaterial zur Herstellung des erfindungsgemäßen intumeszierenden Systems eignet. Auch bei der Verwendung von Polyamid ist es ausreichend, das Polymermaterial mit der Überzugsmasse C1 zu beschichten, um eine ausreichende intumeszierende Wirkung zu erzielen. Es kann in der Überzugsmasse insbesondere auf einen Zusatz von Treibmittel und Kohlenstoffspender verzichtet werden.The results clearly show that polyamide is also suitable as polymer material for the production of the intumescent system according to the invention. Even with the use of polyamide, it is sufficient to coat the polymer material with the coating composition C1 in order to achieve a sufficient intumescent effect. It can be dispensed with in the coating composition, in particular an addition of propellant and carbon donors.

In einem weiteren Referenzversuch ist als Polymermaterial ein aus Polyacrylat-Superabsorber-Faser "Oasis Typ 102" hergestelltes Gewebe mit einem Flächengewicht von 90 g/m2 verwendet worden. Dieses Gewebe ist unter den vorgenannten Beschichtungsbedingungen mit den in den nachfolgenden Tabellen beschriebenen Überzugsmassen A2 bis E2 in einer Menge von 65 g/m2 beschichtet worden: Überzugsmasse A2 (= Grundmasse 2) Einwaage in g Chemische Zusammensetzung Markenname Lieferant Zweck 100 Polyurethan Impranil ELH Bayer AG Bindemittel In a further reference experiment, a polymer having a basis weight of 90 g / m 2 made of polyacrylate superabsorbent fiber "Oasis Type 102" was used as the polymer material. This fabric has been coated under the abovementioned coating conditions with the coating compositions A2 to E2 described in the tables below in an amount of 65 g / m 2 : Coating mass A2 (= basic mass 2) Weighed in g Chemical composition brand name supplier purpose 100 polyurethane Impranil ELH Bayer AG binder

Die vorgenannte Masse bildet eine Grundmasse 2, welche zur Herstellung intumeszierender Überzugsmassen dient. Der Grundmasse 2 können weitere Komponenten zugesetzt sein, z. B. Fungizide und dgl.. Überzugsmasse B2 Einwaage in g Chemische Zusammensetzung Markenname Lieferant Zweck 100 Grundmasse 2 6 Ammoniumpolyphosphat Exolit AP 462 Clariant Chemie Säurespender Überzugsmasse C2 Einwaage in g Chemische Zusammensetzung Markenname Lieferant Zweck 100 Grundmasse 2 6 Ammoniumpolyphosphat Exolit AP 462 Clariant GmbH Säurespender 2 Isocyanat Additiv Z Bayer AG Vernetzer Überzugsmasse D2 Einwaage in g Chemische Zusammensetzung Markenname Lieferant Zweck 100 Grundmasse 2 6 Ammoniumpolyphosphat Exolit AP 462 Clariant Chemie Säurespender 15 Melamin CSC Jäckle Chemie GmbH Treibmittel 2 Isocyanat Additiv Z Bayer AG Vernetzer Überzugsmasse E2 Einwaage in g Chemische Zusammensetzung Markenname Lieferant Zweck 100 Grundmasse 2 6 Ammoniumpolyphosphat Exolit AP 462 Clariant Chemie Säurespender 15 Melamin CSC Jäckle Chemie GmbH Treibmittel 2 Isocyanat Additiv Z Bayer AG Vernetzer 20 Pentaerythrit CSC Jäckle Chemie GmbH Kohlenstoffspender The aforementioned composition forms a matrix 2, which serves for the production of intumescent coating compositions. The matrix 2 may be added to other components, for. B. fungicides and the like .. Coating composition B2 Weighed in g Chemical composition brand name supplier purpose 100 Basic mass 2 6 ammonium polyphosphate Exolit AP 462 Clariant chemistry acid donors Weighed in g Chemical composition brand name supplier purpose 100 Basic mass 2 6 ammonium polyphosphate Exolit AP 462 Clariant GmbH acid donors 2 isocyanate Additive Z Bayer AG crosslinkers Weighed in g Chemical composition brand name supplier purpose 100 Basic mass 2 6 ammonium polyphosphate Exolit AP 462 Clariant chemistry acid donors 15 melamine CSC Jäckle Chemie GmbH propellant 2 isocyanate Additive Z Bayer AG crosslinkers Weighed in g Chemical composition brand name supplier purpose 100 Basic mass 2 6 ammonium polyphosphate Exolit AP 462 Clariant chemistry acid donors 15 melamine CSC Jäckle Chemie GmbH propellant 2 isocyanate Additive Z Bayer AG crosslinkers 20 pentaerythritol CSC Jäckle Chemie GmbH Carbon donor

Die mit den Überzugsmassen A2 bis E2 versehenen aus Polyacrylat-Superabsorber-Faser "Oasis Typ 102" hergestellten Proben sind wiederum der Beflammungsprüfung gemäß DIN 4102-B2 unterzogen worden. Die dabei erzielten Ergebnisse sind in der nachfolgenden Tabelle wiedergegeben: Material Beflammung Kantentest Längsrichtung *) Kantentest Querrichtung *) Rezeptur-Nr. A2 B2 C2 D2 E2 A2 B2 C2 D2 E2 Erreichen d. Messmarke 1) 17 16 . / . . / . . / . 16 16 . / . . / . . / . Selbstverlöschen der Flammen, Ende des Nachbrennens 44 39 6 7 6 35 34 8 7 7 *) Zeitangaben in Sekunden ab Versuchsbeginn
. / . Kein Auftreten des Ereignisses The samples prepared with the coating compositions A2 to E2 made of polyacrylate superabsorbent fiber "Oasis type 102" samples in turn have been subjected to the flame test according to DIN 4102-B2. The results obtained are shown in the following table: material flame Longitudinal edge test *) Edge test transverse direction *) Recipe no. A2 B2 C2 D2 E2 A2 B2 C2 D2 E2 Achieve d. Measuring mark 1) 17 16 , /. , /. , /. 16 16 , /. , /. , /. Self extinguishing the flames, end of afterburning 44 39 6 7 6 35 34 8th 7 7 *) Time in seconds from the beginning of the test
, /. No occurrence of the event

Die Ergebnisse zeigen, dass auch Polyacrylat-Superabsorber-Faser "Oasis Typ 102" ein geeignetes Polymermaterial ist, welches mit einer einfach zusammengesetzten Überzugsmasse C2 zu einem intumeszierenden System kombiniert werden kann. Auch bei Verwendung dieses Polymermaterials ist es nicht erforderlich, der Überzugsmasse einen Kohlenstofflieferanten hinzuzusetzen.The results show that "Oasis Type 102" polyacrylate superabsorbent fiber is also a suitable polymeric material that can be combined with a simple composite C2 coating to form an intumescent system. Even when using this polymer material, it is not necessary to add a carbon source to the coating composition.

Die Überzugsmassen C, C1 und C2 weisen eine hervorragende Transparenz auf. Ein auf der Textilie aufgebrachter Aufdruck erscheint brillant und ist ohne jegliche Beeinträchtigung sichtbar. Das gilt sogar für einen auf beiden Seiten der Textilie sichtbarer Durchdruck. Die Textilie weist ein Flächengewicht von weniger als 300 g/m2 auf. Bei Einwirkung von Hitze oder Flammen schäumt das Material unter Bildung eines Kohlenstoffschaums auf, der eine weitere Flammentwicklung unterbindet.The coating compositions C, C1 and C2 have excellent transparency. An imprint applied to the textile appears brilliant and is visible without any impairment. This is even true for a visible on both sides of the textile print. The textile has a weight per unit area of less than 300 g / m 2 . Upon exposure to heat or flame, the material foams to form a carbon foam, which prevents further flame development.

Indem die vorgeschlagene intumeszierende Textilie das die Textilie selbst bildende Material als Kohlenstofflieferant zur Herstellung eines Kohlenstoffschaums bei Flammeinwirkung benutzt, kann eine wesentliche Verringerung des Flächengewichts erreicht werden. Die intumeszierenden Eigenschaften sind gleichwohl hervorragend.By the proposed intumescent textile uses the textile itself forming material as a carbon source for producing a carbon foam on flame exposure, a substantial reduction in basis weight can be achieved. The intumescent properties are nevertheless outstanding.

Claims (9)

  1. Intumescent body made of a non-intumescent polymer material providing the form of the body, wherein a difference ΔT between a melting temperature Ts and a crystallization temperature Tc of the polymer material is in the range of 55 to 70 K, and a transparent coating mass applied to the polymer material,
    wherein the coating mass has the following composition:
    25 to 95 weight % of an aqueous dispersion containing polyurethane or polyacrylat,
    0,5 to 10 weight % of an isocyanate or a melamine-formaldehyde and
    3 to 15 weight % ammonium polyphosphate as flame retarding agent,
    wherein together with the coating mass, the polymer material results in an intumescent system in which the coating mass penetrates the interior of the polymer material, which forms a carbon-donor component, during a fire and flame-extinguishing foam is created with the acid of the polymer material, wherein the polymer material provides a share of at least 20 weight % of the carbon in the intumescent system.
  2. Intumescent body as defined in claim 1, wherein the polymer material has a carbon content of ≥ 20 weight %.
  3. Intumescent body as defined in one of the preceding claims, wherein the crystallization temperature Tc is < 200 °C, preferably ≤ 190 °C.
  4. Intumescent body as defined in one of the preceding claims, wherein the polymer material has a melting temperature Ts in the range of 50 °C to 400 °C or a decomposition temperature in the range of 150 °C to 500 °C.
  5. Intumescent body as defined in one of the preceding claims, wherein the intumescent system is a halogen-free and/or heavy metal-free system.
  6. Intumescent body as defined in one of the preceding claims, wherein the polymer material is selected from the following group: polyester, polyamide, polyacrylat, polyurethane, polyacrylnitril, aramids and derivatives of the aforementioned polymers.
  7. Intumescent body as defined in one of the preceding claims, wherein, in addition, 0,1 to 1,0 weight % of an agent for deaeration are included.
  8. Intumescent body as defined in one of the preceding claims, wherein, in addition, 0,1 to 1,5 weight % of an insecticide and/or a bactericidin are included.
  9. Intumescent body as defined in one of the preceding claims, wherein the polymer material is present in the form of fibers or woven cloth, knitted fabric made thereof.
EP03767815.8A 2002-12-20 2003-12-17 Intumescent body Expired - Lifetime EP1572815B1 (en)

Applications Claiming Priority (3)

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DE2002161213 DE10261213B4 (en) 2002-12-20 2002-12-20 Intumescent textile
DE10261213 2002-12-20
PCT/EP2003/014399 WO2004058902A1 (en) 2002-12-20 2003-12-17 Intumescent body

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EP1572815A1 EP1572815A1 (en) 2005-09-14
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US7811952B2 (en) 2006-04-20 2010-10-12 Southern Mills, Inc. Ultraviolet-resistant fabrics and methods for making them
EP2111106A2 (en) * 2006-12-29 2009-10-28 Southern Mills, Inc. Insect-repellant fabrics and methods for making them
US9857001B2 (en) 2014-02-04 2018-01-02 Eaton Corporation Low permeation fuel hose
CN104004394B (en) * 2014-06-14 2016-06-01 福州大学 A kind of expandable flame retardant type double-component waterborne polyurethane wood lacquer
DE102016107418A1 (en) 2016-04-21 2017-10-26 Icopal Danmark A/S Cover laminate or coating system
CN110183884A (en) * 2019-05-31 2019-08-30 华南理工大学 A kind of thick-thin composite fireproof coating and preparation method thereof

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DE3801456A1 (en) * 1987-01-27 1988-08-04 Wolman Gmbh Dr Process for the preparation of flameproofed polyurethane compositions
US4774268A (en) * 1987-01-27 1988-09-27 Dr. Wolman Gmbh Process for the preparation of flame resistant polyurethane compositions
DE4041470A1 (en) * 1990-12-22 1992-06-25 Bayer Ag INTUMESCENT AREAS, THEIR PRODUCTION AND THEIR USE
DE4343668A1 (en) * 1993-12-21 1995-06-22 Hoechst Ag Inflatable, flame-retardant coating compounds
DE4343664A1 (en) 1993-12-21 1995-06-22 Pfersee Chem Fab Antimony and halogen cpd free flame retardant coating compsns.
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JP3245555B2 (en) * 1997-10-09 2002-01-15 キョーワ株式会社 Flame retardant for mesh sheet and flameproof mesh sheet using the same
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US20060057915A1 (en) 2006-03-16
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WO2004058902A1 (en) 2004-07-15
DE10261213A1 (en) 2004-07-15
AU2003292252A1 (en) 2004-07-22
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CA2510565C (en) 2011-09-13
EP1572815A1 (en) 2005-09-14

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